[APML] Novak cells, clip diffraction patterns (was Alnitak)

["Bobby Middleton" <bobm@koyote.com>]

Michael, the cell is a Novak and the mirror is held in there pretty much
like my mirror on my other newt. It has 3 "clips" which hang over the mirror
face maybe 1/8 inch. The mirror floats on a 9-point cell. I don't get those
clip diffraction patterns on either of my newts and they both have Novak
cells. Is that 2 sample poll enough to establish a pattern? Any other Novak
cell users out there have a word?
The mirror will "guess" out at about 10 lbs, but that's just a guess.
Bobby Middleton.

----- Original Message -----
From: Michael Gregory <mikeg@airmail.net>
>      This scope never shows any diffraction patterns from the mirror
> clips (like my R200SS does).  How is the primary attached to the
> cell -- silicone ??  Any idea how much the primary weighs?
>
>       I ask because I am investigating different methods for use with the
> R200.
>
> Mike Gregory
>
>
>
> At 11:26 AM 2/8/01 -0600, you wrote:
> >Things are sort of slow with the full moon and clouds, so I put up a shot
I
> >will use later on in another mosaic. It's the Flame nebula and Alnitak
area.
> >It can be seen here:
> >http://www.koyote.com/users/bobm/alnitak.htm
> >
> >It was done with the 12.5" f/7 newt on hypered PJ 400.
> >I appreciate the feedback.
> >Bobby Middelton
>
>
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